Speed-indicator.



G. B. SALA. SPEED INDICATOR. APPLICATION FILED SEPT. 17,1912.

1,116,848, Patented Nov. 10, 1914" rag; 7

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-umllllll Zmmaw zul %fi2 I g, WWQW. JW 4. 57mm oiarannnsfiirsann, or MI RV 0.1 f 1 I Specification of Letters'ZEatent; 10, 1914;

Application filed September 17, 1912. Serial No. 720,746. I, i

To all whom it may concern:

Be it known that I, CHARLES B. SALA,

- citizen oftheiUnited States, residing at Minerva, in the'eounty of Stark and :State of Ohio, have invented certain new: and useful Improvements inSpeed-Indicators, of

.which the following isa specification This invention relates to. speed indicators and controlling devices particularly adapted for use in connectmn with automobiles, al-

' though capable of application. to any rotating part or shaft andto the engine which drives the same. I

As applied to a motor vehicle the object of the invention is to provide an improved.

indicator which will show in such manneras to indicate by sight and sound the speed at which the vehicle is traveling, and if desired to control the operation'of the engine so that it will be stopped when it exceeds a certain speed. Obviously it may be applied to a stationary engine, to indicate and control the operation thereof.

The indicator includes a visible device, and also abell, either of which may be operated by suitable mechanism at a predetermined speed. y In the accompanying drawing sFigure 1 is a side elevation of the indicator, partly in section. Fig. 2 is a side elevation showing the exterior of thecasing.

Referring specifically to the drawings, 12 indicates a casing which may conveniently be made of metal and it isformed or provided at the top with a bell 7 adapted tobe struck by the hammer 7 of an ordinary electric bell operating device mounted within the casing and indicated at 7. On. the

outside the casing is markedflwith a scale of figures indicated at 6, for the purpose'of indicating speed in miles, or otherwise. An

arrow-8 cooperates with this scale, and this arrow is mounted on a pm 8 which extends through a slot 15 in the casing and is attached to the upper end of a lazy tong structure, the members of which-are indicated at 9 and which are arranged for vertical movement within the casing. The lower levers of the lazy tongs are provided at their lower ends with blocks 10 which slide in guides 11 at the sides of the casing, and serve to hold the lazy tongs in upright position. A pin 29 is connected to the lower pivot v thereunder, resting at its lower end-"on the upper end of a vertical shaft X which is of the lazy tongs and stands vertically.

X, vpermitting vertical movement or shift of the shaft. The lower end of the shaft is reduced and rests in a bearing in a pl'ate or supp'ort'Y.

driven in any suitablemanner, as by a belt '1 it centrifugal governor-g mechanism having'weights W is mounted on the shaft and is driven thereby, the lower collar ll) of the governor being fast on the "shaft and the upper collar tl loose thereon and the latter is provided with aneckhavinga shoulder 12 whichis carried inn-bearing infa -cross 8 piece I which is fixed to the .casing and throughwhich the shaft Xextends, so that the upper collar is supported in a relatively stationary position,\the shaft Xbeing movable up and down through the upper collar and the crosspiece as the weights operate centrifugally. A spring S normally retracts the weights and lowers the shaft to" I the extent permitted by the lower bearing.

One terminal 14 of the bell device is arranged to be "struck" by "an arm 13 projecting from the lazy tongs, said arm being in the bell circuit, and when the lazy tongs" are liftedjor extended sufliciently to close" the circuit the bell is operated to sound an", v

alarm whichcontinues to ring as long as the circuit is closed. also provide an arm 18 carried by a set screw 1 working in a slot 16 in the casing, and connected to one of the wires 18 leading. from the ignition mechanism of the engine, not shown. At a predetermined point or speed, the arm 13 strikes the terminal 18 and grounds the circuit to the ignition mechanism thereby stoppin screw the contact member 18 maybe raised or lowered to desired position in the engine. By means of the set order. tolimit the operation of the engine to any desired speed. 1

When the shaft X is driven the weights W fly out in consequence of centrifugal force and lift said shaft which by means of the connecting rod 29 lifts or extends the lazy tongs thereby raising the pointer 8 which indicates the speed, and in due time acting to sound the belland ground the gniter circuit by the means above described.

' When the vehiclefor engine is stopped the spring S and theweight of the parts causes I the shaftXto drop with obvious results.

When used on an automobile the casing no will be mounted in' such position thereon that the indicator will bevisible from,;the f street, or externally, andjthe devices will preferably be made of such size that the speed indicator can beseen from a distance, whereby violations of speed laws can be .observed, and will also be indicated by the sounding'of the bell, and when the stop devices are used the engine will also be stopped when the speed exceeds a certain limit. The device'can housed in connection with stationary engines for indicating the speed of rotation of; the main shaft, or other parts, suitable transmission being provided in one instance to the automobile wheels and in the other instance tozsome rotating part of the engine. The use of the invention is not limited to any particular purpose, nor is the construction limited to the particular mechanism illustrated and described.

What I claim as new is: a

l. A, speed indicator comprising an upright shaft shiftable lengthwise, a centrifugaldevice mounted on and driven by said shaft and operatively connected thereto pointer mounts to shift the shaft according to the speed, a

lazy tong structure the lower end of which rests on the up oer end of said shaft, and a it on the upper end of said lazy-tongstructure and operated thereby to indicate speed.

2. A speed indicator comprising a casing having guides therein, lazy tongs located in the casing and provided with blocks slidable in said guides, an indicating de vice actuated by the lazy tongs, a shaft projecting into the casing and operatively connected to the lazy tongs, and centrifu gal'ly operated means to shift the shaft lengthwise and" extend the lazy tongs, ac-

cording to the speed of rotation of the shaft In-testimony whereof, I do atfix my signature in presence of two Witnesses. CHARLES B. SALA.

Witnesses:

A. R. SIMPSON,

HA NAH A. SALA.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D.- O. 

